Hand brake control



Oct. 28, 1952 N. E. WAHLBERG ETAL 2,615,350

HAND BRAKE CONTROL Filed June 10, 1946 zsx-rggys-gaEr-zw 1 NILS ERIK WAHLBERG JOSEPH F. SLADKY INVENTORS THE! ATTORNEY Oct. 28, 1952 N. E. WAHLBERG EI'AL 2,615,350

I HAND BRAKE CONTROL Filed June10, 1946 v z sx-ma'rs-sxmw 2 NILS ERIK WAHLBERG JOSEPH F'. SLADKY INVENTORS :BYZAIZ THE! ATTORNEY Patented Oct. 28, 1952 Sladky, Detroit, Mich., assignors to Nash-Kelvinator Corporation, Kenosha, Wis., a corporation of Maryland Application June 10, 1946, seem. 675,738

This invention relates to hand brake controls, more particularly, to a hand brake control for brakes of the type used in motor vehicles.

It isan' object of this invention to provide a hand brake control of the cable type which will prevent excessive wear of the cables thereof.

It is another object of thisinvention to provide a hand brake control for a vehicle which is easily adjusted and maintained in an operative condition.

It is a further object of this invention to provide a hand brake control for motor vehicles which is simple in design and economical to manufacture,

Further objects and advantages of this inven tion will be apparent from the following descrip- 7 tion, claims; and drawings in which like char-1 acters are used to designate like'parts and of which there are two sheets in which: I

Figure 'l is a plan View of a portion of the driving mechanism of an automobile showing the invention as applied thereto;

' Figure 2 is a view from below the inventionas shown in Figure 1 and looking upwardly;

Figure 3 is a front elevational view of the invention, partially in section, as shown in Figure 2; Figure 4 is a side elevational view, partially in section, as taken along lines 4-4 of Figure 2 looking in the direction of'the arrows; and

- Figure .5 is a side elevational view of a portion of the invention as shown in Figu're 2g-fi Illustrated in Figure 1 is the driving mechanism of the'torque tube type; for 'a motor vehicle comprising an engine 10, a transmission I2, a-

torque tube [4, rear axle housings l6 and wheels Ill. The vehicle is driven by the transmission of power from the engine Ill through the transmission l2 to the drive shaft (not shown). within torque tube I4 to the rear axles within housings it to the wheels 18 for rotation thereof. A forwardmotion created by this transmission of power is transmitted to the body portion of. the vehicle by'torque tube 14 being rigidly secured near its forward end to the cross member (not shown) of the body. H

A flexible connection 20 is provided between transmission l2 and torquetube I4. It will be noted thatall of the parts of the mechanism described which are to the rear of transmission I2 will be raised and lowered as the wheels l8 move upwardly and downwardly when the vehicle is being driven on a rough surface.

All automobiles are provided with a secondarybraking system which is usually of a mechanical nature and provided for emergency purposes and as a means of applying the, brakes associated with the rear wheels of the automobile when said auand provides a handlever such as lever 22within 1 the passenger compartment which may be rotated to apply the brakes. It is customary to use cables as connecting means intermediate a lever such as lever 22'and the brakes of the rear wheels. It has been found that if suchcables are secured to frame members or body members for guiding and carrying said cables intermediateof the lever 22 and the rear wheels l8, that the oscillation of said wheels will 'Whip' the cables and cause said cables to wear excessively adjacent the abovementioned connection means resulting insubse 'que'nt failure of the hand braking control mechanism.

This invention'provides a, hand brake. control mechanismcomprising ahand' lever 22 manually rotatable to pull cable 24 which is rigidly secured at itsone end to lever 22. Cable 24 fromjits connection with-lever 22 passes over,pulley'26 and U-bolt. 40' positioned'over the. top of torque tube l 4' and havingits ends. extending through aligned apertures insaddle p42. and plate 36; .Saddle 42 is positioned against the underside of torque tube I4 and plate 36 is held against the-undersideof saddle 42.by lock ,washers 44 telescopically positioned and held on the lower threaded ends 46 of U-bolt 40 by nuts'48 turned on the threaded ends 46 of b0lt,40. Saddle 42 is provided with a vertical aperture 43'near its center in which is positioned the head38 ofbolt34. g I f Telescopically positioned around bolt 34- and immediately below'plate 36 is a washer 50, Immediately below washer 5D and telescopically positionedon bolt 34 are the forward pinched .ends 52 of brace rods 54. Rods 54 extend rearwardly and outwardly from their forward connection with torque tube i4 and have their rearward ends rigidly secured to the axle housings l6. Rods 54 are provided to aid in the transmission of power from the wheels [8 through the torque tube I 4.

Immediately below ends 52 of rods 54 is a washally positioned around portion 32 and held there-'- on by a cotter pin extendingthrough.aperture 66 in portion 32.

Pulley is comprised ofapain oistampingsr held together by rivets 66 and is provided with a horseshoe-shaped portion 68. (Figurez). having a flange 10 on its outer side. an intermediate portion positioned over member. 68 from which cable 12 extends to its ends which are.- rotatably secured; to: brake: levers 14. extendingi outwardly through. apertures in the brake backingplates 16.- carried. by. theaxle=housings jfiradjacentthe. wheels lfi. Flange J11 .is'provided to.;prevent,, cable 'lz from. slipping of? member 68; .fl'Ihe. brake.- mechanism. hasnot been. shown since. any, one,- of several 1 mechanical brakes vrquld be [operative withzthe use of. this. invention.

I Cableidlpasses overrpulley. 3il' an'd'is secured thereto, by bolus. (FiguresZlandlfi which passes throughjalignedlapertures in spaced portions 80 of pulley 3.0 andha'slanutaz turned on thelower endthemofj'td squeeze la portion of. cable 2.4 b'etweemportions tlilltorigidly secure cable, 24 to pulley flfilQIn. this. manner. when .cable 24 is Pl lld" by rotating, lever, 2212111163. .3 8. will be,v r0.- tatedfin. acidckwiSedirection, as. shown in. Fig;-v ure- 2"which is looking at the lower side of." the invention. as, shown in the other. views, which willlpulL cables. 12. forward} thus pulling brake levers 1'4. forward to engage, the bralms' associatedwithwh'e'els 1'32. v a Pulley. J3Tis provided with a clamping means (Figures 4, and "5)" for cable ',1 2 "'whicli comprises a" bolt 821' extending through alignedflapertures in spaced," portions' 86' of" pulley ".3ll".; having a spacingsleeve 88 telescopically; positioned on bolt 84*"intermediate the portions 36 and designed. to force, cable 72: into frictionalengagement.with portionsglifi :EIIQLSIGGVB, 88,011 either side. or said sleeye by turning 'nut 99 on the lower threaded end ezkofflboltjfldz This means is provided'to prevent'gcable' '1 2;from' slippinggon pulley 3 n thus oausing excessive wear of cable .12 and'a'lso. to provide adjustmentfof cable, 12 inicase the'gbrake 1mm of 'oner of theywheel brakess hould wear excessively therebyTequiring-its lever Mto be pulled further 'to engage" that-particular brake: 'Inthis-"-manner: the inventor. h'asprovided a hand brake-control mechanism of-the cable type wherein the 'cablesassociatedwith the brakes of therfrear' wheels of the vehicle are moved' up Wardly;-and".downwardly with said Wheels 'afr' d therefore are not. subject to. excessiveawhipping as is the case When'said b rakecablesare secured toor-guided by meanscarriedbyframe or body members whichdo not'movefin direct relation to therear wheelsofthe vehicle; I

* Numerousimodificationswill; atonce occur to A cable 12 has" those skilled in the art and it is contemplated that any modifications falling within the scope of the appended claims are expressly reserved even though the invention has been described in considerable detail in the modification disclosed. What is claimed and is desired to be secured byrLetters Ratent is:

. LA pulley havinga circumferential cable groove, a clamping means for a cable comprising aligned apertures formed in the opposing flanges of the pulley, a bolt extending through said ap- I 'erture's, a-spacer telescopically positioned on said boltbetween said flanges, and a nut on said bolt tozfor'ce said flanges inwardly toward said spacer.

2:;A pulley having a circumferential cable groove-1a loop-like'projection formed on said pulley, a clamping mechanism formed on said pulley comprising aligned apertures formed in the opposing-flanges of the pulley, a bolt extending through said apertures a spacer telescopically positioned. on .said boltlcietvveen said .fianges, .and a; nutturned. on said; bolt to force said'. flanges toward the spacer... v 3. A. vpulley having, a circumferential cable groove, aifixedprojection formed on said' 'pulley over which acabl'e may be passed.intermediate theends thereof, a clampingmechanismior such a' cable formed on the pulley andi'comprising aligned apertures formed in the opposingflanges or the pulley, a bolt extending through said-apertures, a. spacer telescopically positioned. on said boltibetween said flanges, anda nut turned on said bolt for. forcing said flanges towardsa'id spacer.

4..A pulley, aprojection fonriedlonsaidQpul ley, over. which. a cable. may. bepassedintep mediate. the. ends. thereof, a .clampingmechanism forv a. cable. formed. on the pulley comprising aligned apertures. formed in the. opposing; sides of the groove. of'the. pulley,-, a bolt-extending through said apertures, aspacer. telescopically positioned on said bolt between said sidesofith groove, and a. nut onthe .endof :said-bolttoforce said sides inwardly. toward. saidlspacer.

ERIK WAHLBER'G. JOSEPHEL-SLADKY.

REFERENCESECITED. I Thei following references are: of: record? ini the file of thisipatent Y e UNITED'ST'ATESPATENT S.

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